Mixing chamber eos oil-bushing furnaces



Jan.22,1924. 1,481,625

P. SCHULTZ MIXING. CHAMBER FOR OIL BURNING FURNACES Filed April 1922 gllgllllm i gwumloz 14 0 P404 Sc/2017:

two: or 2 q Patented Jan. 22, 1924.

ATENT OFFICE.

PAUL SCHULTZ, 0F OAKLAND, CALIFORNIA.

Application filed April 5, 1922. Serial No. 549,955.

r 0 all whom it may concern:

Be it known that I, PAUL SCHULTZ, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Mixing Chambers for Oil-Burning Furnaces, of which the following is a specification.

My invention is a mixing chamber for oil burning furnaces such as used under boilers. My mixing chamber protects the flame of the burner from the cold air of the furnace combustion chamber and prevents the oil of the burner from condensing. My mixing chamber becomes hot and vaporizes the oil from the burner, thus providing a better mixture of the oil fuel than is otherwise possible and materially assisting and improving the combustion of the furnace and effecting a saving of about 10% of the 011 consumed by the standard open burner.

Referring to the drawing forming a part of this specification:

Figure 1 is a longitudinal section of an oil burning boiler furnace with my mixing chamber mounted therein.

Figure 2 is a front elevation of my mixing chamber.

Figure 3 is a plan view of my mixing chamber.

Figure & is a longitudinal vertical section of my mixing chamber taken on line 4-4 of Figure 2.

Figure 5 is a perspective view of the lower wall.

Figures 6 and 7 are views of an elevation and section respectively of a modified mixin chamber according to my invention.

My mixing chamber is made preferably of fire brick and comprises two rearwardly diverging vertical side walls 1 and 2 and a top wall 3 connecting said side walls, and a detachable bottom wall 4 which fits in the bottom of the chamber between the side walls 1 and 2 upon the forward grate support 9 of the furnace, the side edges of said bottom wall converging to fit between said converging side walls.

My mixing chamber is placed in the forward end of the furnace combustion chamber 5 on the furnace grate 6. The oil burner 7 extends through the usual front door 8 of the furnace into the forward and small end of my mixing chamber.

The diverging side walls 1 and 2 of the chamber allows the flame to spread as it passes through the chamber, while the upper wall 3 and lower Wall 4 protect the metal parts of the furnace.

The modified form of my mixing chamber shown in Figures 6 and 7 may be made of metal and comprises a lower wall 10, an upper wall 11, rearwardly diverging side walls 12 and 13, and forward end wall 14, which front wall is provided with an opening 15 through which the burner 7 extends into the forward end of the chamber and which side walls are provided with air inlet openings 16 and 17 near their forward ends opposite said burner for admitting air into the chamber to support combustion therein.

Having described my invention, I claim:

In a longitudinally arranged oil burning furnace, a bottom wall, side walls and a top wall within the furnace forming a furnace combustion chamber, a horizontal grate positioned about midway of the height of the combustion chamber, a door at the end of said combustion chamber, an oil burner projecting through said door, an element for protecting the flame issuing from the burner supported adjacent said door and on said grate, said element being constructed of fire brick and comprising two vertical walls diverging from said burner, a top wall connecting said side walls, a bottom plate forming a bottom wall fitting between said diverging walls and a third vertical wall connecting the ends of said first mentioned vertical wall, said diverging vertical walls having air inlet openings formed therein rearwardly of the point at which the flame issues from the burner, said third vertical wall having an opening therein for the burner.

In testimony whereof I affix my signature.

PAUL SCHULTZ. 

